docs: def load_jupyter_server_extension(nb_server_app):
    """Called by Jupyter when this module is loaded as a server extension."""
    app = nb_server_app.web_app
    host_pattern = '.*$'
  
    app.add_handlers(host_pattern, [
        (utils.url_path_join(app.settings['base_url'], '/http_over_websocket'),
         handlers.HttpOverWebSocketHandler),
        (utils.url_path_join(app.settings['base_url'],
                             '/http_over_websocket/diagnose'),
         handlers.HttpOverWebSocketDiagnosticHandler),
    ])
    print('jupyter_http_over_ws extension initialized. Listening on '
          '/http_over_websocket')